ThetaLineitemPricesSelfJoin.java example

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/*
 * Copyright (c) 2011-2015 EPFL DATA Laboratory
 * Copyright (c) 2014-2015 The Squall Collaboration (see NOTICE)
 *
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ch.epfl.data.squall.examples.imperative.theta;

import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;

import ch.epfl.data.squall.components.Component;
import ch.epfl.data.squall.components.DataSourceComponent;
import ch.epfl.data.squall.components.theta.ThetaJoinComponentFactory;
import ch.epfl.data.squall.expressions.ColumnReference;
import ch.epfl.data.squall.expressions.ValueSpecification;
import ch.epfl.data.squall.operators.AggregateCountOperator;
import ch.epfl.data.squall.operators.ProjectOperator;
import ch.epfl.data.squall.operators.SelectOperator;
import ch.epfl.data.squall.predicates.ComparisonPredicate;
import ch.epfl.data.squall.query_plans.QueryBuilder;
import ch.epfl.data.squall.query_plans.ThetaQueryPlansParameters;
import ch.epfl.data.squall.types.DateType;
import ch.epfl.data.squall.types.DoubleType;
import ch.epfl.data.squall.types.NumericType;
import ch.epfl.data.squall.types.StringType;
import ch.epfl.data.squall.types.Type;

public class ThetaLineitemPricesSelfJoin {

    private QueryBuilder _queryBuilder = new QueryBuilder();
    private static final String _date1Str = "1993-06-17";
    private static final Type<Date> _dateConv = new DateType();
    private static final NumericType<Double> _doubleConv = new DoubleType();
    private static final Date _date1 = _dateConv.fromString(_date1Str);
    private static final Type<String> _stringConv = new StringType();

    public ThetaLineitemPricesSelfJoin(String dataPath, String extension,
	    Map conf) {
	int Theta_JoinType = ThetaQueryPlansParameters.getThetaJoinType(conf);

	ProjectOperator projectionLineitem = new ProjectOperator(new int[] { 4,
		5 });
	final List<Integer> hashLineitem1 = Arrays.asList(1);

	SelectOperator selectionLineitem1 = new SelectOperator(
		new ComparisonPredicate(ComparisonPredicate.EQUAL_OP,
			new ColumnReference(_stringConv, 14),
			new ValueSpecification(_stringConv, "TRUCK")));
	DataSourceComponent relationLineitem1 = new DataSourceComponent(
		"LINEITEM1", dataPath + "lineitem" + extension)
		.add(selectionLineitem1).add(projectionLineitem)
		.setOutputPartKey(hashLineitem1);
	_queryBuilder.add(relationLineitem1);

	SelectOperator selectionLinitem2 = new SelectOperator(
		new ComparisonPredicate(ComparisonPredicate.NONEQUAL_OP,
			new ColumnReference(_stringConv, 14),
			new ValueSpecification(_stringConv, "TRUCK")));
	final List<Integer> hashLineitem2 = Arrays.asList(0);
	DataSourceComponent relationLineitem2 = new DataSourceComponent(
		"LINEITEM2", dataPath + "lineitem" + extension)
		.add(selectionLinitem2).add(projectionLineitem)
		.setOutputPartKey(hashLineitem2);
	_queryBuilder.add(relationLineitem2);

	AggregateCountOperator agg = new AggregateCountOperator(conf);

	ColumnReference colLine1 = new ColumnReference(_doubleConv, 1); // prices
	ColumnReference colLine12 = new ColumnReference(_doubleConv, 0); // quantity

	/*
	 * Division div1 = new Division(colLine1, colLine12); ColumnReference
	 * colLine2 = new ColumnReference(_doubleConv, 1); ColumnReference
	 * colLine22 = new ColumnReference(_doubleConv, 0); Division div2 = new
	 * Division(colLine2, colLine22);
	 */

	// INTERVAL
	// Addition add = new Addition(colLine2, new
	// ValueSpecification(_doubleConv,2.0));
	// Subtraction sub = new Subtraction(colLine2, new
	// ValueSpecification(_doubleConv,2.0));

	// IntervalPredicate pred3 = new IntervalPredicate(colLine1, colLine1,
	// sub, add);

	// Addition add = new Addition(colLine2, new
	// ValueSpecification(_doubleConv,10.0));
	ComparisonPredicate pred3 = new ComparisonPredicate(
		ComparisonPredicate.LESS_OP, colLine1, colLine12, 10,
		ComparisonPredicate.BPLUSTREE);

	// Addition add = new Addition(div2, new
	// ValueSpecification(_doubleConv,5.0));
	// ComparisonPredicate pred3 = new
	// ComparisonPredicate(ComparisonPredicate.LESS_OP,div1, add);

	Component LINEITEMS_LINEITEMSjoin = ThetaJoinComponentFactory
		.createThetaJoinOperator(Theta_JoinType, relationLineitem1,
			relationLineitem2, _queryBuilder)
		.setJoinPredicate(pred3).add(agg)
		.setContentSensitiveThetaJoinWrapper(_doubleConv);

    }

    public QueryBuilder getQueryPlan() {
	return _queryBuilder;
    }
}